C111112111133131121133133313331333131333132322331333131121323123121   >>    C11111211113313112113313331333133313133313232233133313112132312312   <<    C111112111133131121133133313331333131333132322331333131121323123123   >>      C111112111133131121133133313331333131333132322331333131121323123122   >>